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It examines segment-scale lithospheric thickness and melt variations near the Andrew Bain megatransform fault and Marion hotspot, using multibeam bathymetry, gravity, magnetic data, and earthquake locations. Additional chapters develop dynamic models of interseismic deformation and stress transfer, followed by postseismic simulations that test how lithospheric shear zones control observed deformation patterns.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/transform-faults-and-lithospheric-structure-insights-from-numerical-models-and-shipboard-and-geodetic-observations/269386/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/transform-faults-and-lithospheric-structure-insights-from-numerical-models-and-shipboard-and-geodetic-observations/269386.png","ImageObject",300,407,{"name":92,"@type":93},"Mali","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-18","2026-09-15",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What data sources are used to study lithospheric thickness and melt variations near the Andrew Bain megatransform fault?","Question",{"text":112,"@type":113},"The dissertation uses multibeam bathymetry, gravity data, magnetic data, and earthquake locations, processed to support comparisons across survey areas.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does Chapter 3 connect plate motion to continental transform faults?",{"text":117,"@type":113},"It develops dynamic numerical models to simulate interseismic deformation and stress transfer from plate motion, then compares results with geodetic observations and surface heat flow observations.",{"name":119,"@type":110,"acceptedAnswer":120},"What role do lithospheric shear zones play in postseismic deformation?",{"text":121,"@type":113},"Chapter 4 introduces numerical models that test how lithospheric shear zones affect deformation after earthquakes, including comparisons to deformation patterns such as those discussed for the Mojave Desert.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},269386,1789451122,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144,"preview_page_count":4},2336475104362,"https://ap-avatar.wpscdn.com/avatar/22000c4c46a41b752dd?x-image-process=image/resize,m_fixed,w_180,h_180&k=1786595829695023868","UNIVERSITY OF CALIFORNIA, SAN DIEGO  \nTransform Faults and Lithospheric Structure: Insights from Numerical Models and Shipboard and Geodetic Observations  \nA dissertation submitted in partial satisfaction of the requirements for the degree  \nDoctor of Philosophy  \nin  \nEarth Sciences  \nby  \nChristopher S. Takeuchi  \nCommittee in charge:  \nProfessor Yuri Fialko, Chair  \nProfessor John Sclater  \nProfessor Je􀀋 Gee  \nResearcher Donna Blackman  \nProfessor Xanthippi Markensco􀀋  \n2012  \nCopyright  \nChristopher S. Takeuchi, 2012 All rights reserved.  \nThe dissertation of Christopher S. Takeuchi is approved, and it is acceptable in quality and form for publication on micro-􀀌lm and electronically:  \n\n|  |\n| --- |\n|  |\n|  |\n|  |\n\nChair  \nUniversity of California, San Diego  \n2012  \nDEDICATION  \nTo my family.  \nTABLE OF CONTENTS  \nSignature Page ...................................... iii  \nDedication ........................................ iv  \nTable of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v  \nList of Figures ...................................... viii  \nList of Tables ....................................... xvi  \nAcknowledgements .................................... xvii  \nVita and Publications .................................. xix  \nAbstract of the Dissertation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx  \nChapter 1 Introduction ................................ 1  \nChapter 2 Segment-scale and intrasegment lithospheric thickness and melt variations near the Andrew Bain megatransform fault and Marion hotspot: Southwest Indian Ridge, 25:5􀀎 E-35􀀎 E ............. 4  \n2.1 Introduction ............................. 6  \n2.2 Tectonic Setting and Regional Background ............ 8  \n2.3 Data Processing and Reduction .................. 10  \n2.3.1 Multibeam Bathymetry .................. 10  \n2.3.2 Gravity Data ........................ 10  \n2.3.3 Magnetic Data ....................... 12  \n2.3.4 Earthquake Locations ................... 14  \n2.4 Survey Area AP: 32􀀎 E-35􀀎 E .................... 14  \n2.4.1 Morphology ......................... 14  \n2.4.2 Mantle Bouguer Anomaly ................. 17  \n2.4.3 Magnetization and Magnetic Anomalies ......... 20  \n2.4.4 Earthquake Locations ................... 20  \n2.5 Survey Area DA: 25:5􀀎 E-28􀀎 E ................... 20  \n2.5.1 Morphology ......................... 20  \n2.5.2 Mantle Bouguer Anomaly ................. 25  \n2.5.3 Magnetization and Magnetic Anomalies ......... 25  \n2.5.4 Earthquake Locations ................... 25  \n2.6 Ridge Segmentation and Plate Boundary Location ....... 26  \n2.7 Interpretation of Observations ................... 27  \n2.7.1 De􀀌nitions and Cautions .................. 27  \n2.7.2 Sea􀀍oor Texture as an Indicator of Melt Supply and Delivery ........................... 28  \n2.7.3 Observations ofAsymmetries in Melt Delivery and Lithospheric Thickness ...................... 28  \n2.8 Models of Asymmetric Melt Delivery ............... 31  \n2.8.1 Ridge Migration ...................... 31  \n2.8.2 Subaxial Asthenospheric Flow: Segment DA-1 ..... 32  \n2.8.3 Subaxial Asthenospheric Flow: Segments AM-1 and MP- 1 ............................... 32  \n2.8.4 In􀀍uence of the Marion Hot Spot ............. 33  \n2.8.5 Flow from the Marion Hot Spot ............. 36  \n2.8.6 Segment DA-1: In􀀍uence of the Long-O􀀋set Andrew Bain Transform Fault ................... 37  \n2.9 Andrew Bain Transform Fault: A Major Melt Supply Boundary 39  \n2.10 Conclusions ............................. 40  \nChapter 3 Dynamic models of interseismic deformation and stress transfer from plate motion to continental transform faults .............. 42  \n3.1 Introduction ............................. 43  \n3.2 Model Description ......................... 44  \n3.2.1 Model Geometry ...................... 44  \n3.2.2 Rheology .......................... 45  \n3.2.3 Thermal Regime ...................... 46  \n3.2.4 Simulations of Earthquake Cycles ............. 50  \n3.2.5 Cycle in","cbCaiuVcbOQKMZtu","https://ap.wps.com/l/cbCaiuVcbOQKMZtu","pdf",10530236,156,"English","# Chapter 1 Introduction\n# Chapter 2 Segment-scale and intrasegment lithospheric thickness and melt variations near the Andrew Bain megatransform fault and Marion hotspot: Southwest Indian Ridge, 25:5°E-35°E-35°E-35°E\n## 2.1 Introduction\n## 2.2 Tectonic Setting and Regional Background\n## 2.3 Data Processing and Reduction\n## 2.4 Survey Area AP\n## 2.5 Survey Area DA\n## 2.6 Ridge Segmentation and Plate Boundary Location\n## 2.7 Interpretation of Observations\n## 2.8 Models of Asymmetric Melt Delivery\n## 2.9 Andrew Bain Transform Fault: A Major Melt Supply Boundary\n## 2.10 Conclusions\n# Chapter 3 Dynamic models of interseismic deformation and stress transfer from plate motion to continental transform faults\n## 3.1 Introduction\n## 3.2 Model Description\n## 3.3 Results of Numerical Simulations\n## 3.4 Comparison With Observations\n## 3.5 Discussion\n## 3.6 Conclusions\n# Chapter 4 Numerical investigation of the role of lithospheric shear zones in postseismic deformation\n## 4.1 Introduction\n## 4.2 Model Description\n## 4.3 Results\n## 4.4 Discussion\n## 4.5 Conclusions\n## 4.6 Appendix A: Model Validation","[{\"question\":\"What data sources are used to study lithospheric thickness and melt variations near the Andrew Bain megatransform fault?\",\"answer\":\"The dissertation uses multibeam bathymetry, gravity data, magnetic data, and earthquake locations, processed to support comparisons across survey areas.\"},{\"question\":\"How does Chapter 3 connect plate motion to continental transform faults?\",\"answer\":\"It develops dynamic numerical models to simulate interseismic deformation and stress transfer from plate motion, then compares results with geodetic observations and surface heat flow observations.\"},{\"question\":\"What role do lithospheric shear zones play in postseismic deformation?\",\"answer\":\"Chapter 4 introduces numerical models that test how lithospheric shear zones affect deformation after earthquakes, including comparisons to deformation patterns such as those discussed for the Mojave Desert.\"}]","Transform Faults and Lithospheric Structure: Insights from Numerical Models and Shipboard and Geodetic Observations | PDF",393]